diff --git a/packages/fuzzer/package.json b/packages/fuzzer/package.json
index 57f4106f7e..38450fc110 100644
--- a/packages/fuzzer/package.json
+++ b/packages/fuzzer/package.json
@@ -11,7 +11,7 @@
     "dotenv": "8.2.0",
     "ethers": "5.7.2",
     "ts-node": "9.1.1",
-    "typescript": "4.1.5",
+    "typescript": "4.9.5",
     "yargs": "16.2.0"
   }
 }
diff --git a/packages/lib-base/package.json b/packages/lib-base/package.json
index e0ff88b41a..1b466a0655 100644
--- a/packages/lib-base/package.json
+++ b/packages/lib-base/package.json
@@ -35,6 +35,6 @@
     "mocha": "8.3.2",
     "npm-run-all2": "5.0.2",
     "ts-node": "9.1.1",
-    "typescript": "4.1.5"
+    "typescript": "4.9.5"
   }
 }
diff --git a/packages/lib-react/package.json b/packages/lib-react/package.json
index 87381f54d6..16a6065d59 100644
--- a/packages/lib-react/package.json
+++ b/packages/lib-react/package.json
@@ -34,6 +34,6 @@
     "eslint-plugin-react-hooks": "4.6.2",
     "npm-run-all2": "5.0.2",
     "react": "17.0.2",
-    "typescript": "4.1.5"
+    "typescript": "4.9.5"
   }
 }
diff --git a/packages/lib-subgraph/package.json b/packages/lib-subgraph/package.json
index 678fa51351..844898a612 100644
--- a/packages/lib-subgraph/package.json
+++ b/packages/lib-subgraph/package.json
@@ -18,7 +18,7 @@
     "apollo": "2.32.5",
     "npm-run-all2": "5.0.2",
     "rimraf": "3.0.2",
-    "typescript": "4.1.5"
+    "typescript": "4.9.5"
   },
   "dependencies": {
     "@apollo/client": "^3.11.8",
diff --git a/packages/providers/package.json b/packages/providers/package.json
index 2c9d93fe52..c949213883 100644
--- a/packages/providers/package.json
+++ b/packages/providers/package.json
@@ -20,7 +20,7 @@
   "devDependencies": {
     "ethers": "5.7.2",
     "ts-node": "9.1.1",
-    "typescript": "4.1.5"
+    "typescript": "4.9.5"
   },
   "peerDependencies": {
     "ethers": "^5.3.0"